deriveUpgradeUuid

Whether KiteConfig fills the Windows upgrade code for you, derived from the root id.

Default: false. The code is a stable UUIDv5, so the same id always yields the same one, which is what lets an MSI upgrade an install in place rather than sitting beside it.

Turning this on for an app you already shipped changes its upgrade code once, on that release: existing installs will not upgrade in place, the same one-time break this feature prevents from then on. Enable it before your first release if you can.

An upgrade code you set yourself is always kept. This only fills a blank. Changing id changes the derived code and breaks in-place upgrades for everyone already installed, so pin the old value by hand if you rename.